Report for 203898

Name

CLOUDFLARENET-UK - Cloudflare Inc, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

203898 CLOUDFLARENET-UK - Cloudflare Inc, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS8220          COLT - COLT Technology Services Group Limited, GB

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
70999 AS203898       ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  CLOUDFLARENET-UK - Cloudflare Inc, US

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
62491 AS203898      CLOUDFLARENET-UK - Cloudflare Inc, US              1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  185.122.0.0/24       4777 2516 8220 203898   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS203898   1 More Specifics   1 Total Advertisements   CLOUDFLARENET-UK - Cloudflare Inc, US
    185.122.0.0/24                185.122.0.0/22

Whois Entry

whois: 402603

IANA has recorded AS203898 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS203898\n             % This is the RIPE Database query service.
             % The objects are in RPSL format.
             %
             % The RIPE Database is subject to Terms and Conditions.
             % See https://docs.db.ripe.net/terms-conditions.html
             
             % Note: this output has been filtered.
             
             % Information related to 'AS203889 - AS203938'
             
             as-block:       AS203889 - AS203938
             descr:          RIPE NCC ASN block
             remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
             mnt-by:         RIPE-NCC-HM-MNT
             created:        2026-03-05T15:29:31Z
             last-modified:  2026-03-05T15:29:31Z
             source:         RIPE
             
             % Information related to 'AS203898'
             
             % Abuse contact for 'AS203898' is 'abuse@cloudflare.com'
             
             aut-num:        AS203898
             as-name:        CLOUDFLARENET-UK
             descr:          Cloudflare, Inc.
             descr:          101 Townsend Street, San Francisco, CA 94107, US
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         MNT-CLOUDFLARE
             admin-c:        CAC80-RIPE
             tech-c:         CTC6-RIPE
             org:            ORG-CI40-RIPE
             remarks:        https://cloudflare.com/abuse
             created:        2015-10-08T08:41:45Z
             last-modified:  2019-06-20T01:23:20Z
             source:         RIPE # Filtered
             
             organisation:   ORG-CI40-RIPE
             org-name:       Cloudflare Inc
             country:        US
             reg-nr:         4710875 (Delaware)
             org-type:       LIR
             remarks:        https://cloudflare.com/abuse
             address:        101 Townsend Street
             address:        CA 94107
             address:        San Francisco
             address:        UNITED STATES
             phone:          +1-650-319-8939
             fax-no:         +1-650-230-7173
             admin-c:        TP5485-RIPE
             admin-c:        ML18637-RIPE
             admin-c:        SR11544-RIPE
             abuse-c:        CF6885-RIPE
             mnt-ref:        RIPE-NCC-HM-MNT
             mnt-ref:        MNT-CLOUDFLARE
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         MNT-CLOUDFLARE
             created:        2011-05-25T10:01:50Z
             last-modified:  2026-05-13T07:33:38Z
             source:         RIPE # Filtered
             
             %ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
             %
             % Queries from your IP address have passed the daily limit of controlled objects.
             % Access from your host has been temporarily denied.
             % For more information, see
             % https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
             
             % This query was served by the RIPE Database Query Service version 1.122.1 (ABERDEEN)